Remora - ethernet NVEM / EC300 / EC500 cnc board

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2 years 8 months ago - 2 years 8 months ago #293853 by Murphy
Anyone able to get the single channel encoder working ? Also will the optocouplers on the EC500 handle 40khz
Last edit: 2 years 8 months ago by Murphy.

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2 years 8 months ago #293910 by TimGow
Hi Everyone,
= = = = =   t f t p y   i n s t a l l a t i o n   l i n k   = = = = =
I have progressed to getting the upload_config.py to work for me.  The roadblock was installing tftpy; thank you to @raf1110 for the key instruction at 27 Jan 2024 02:49 #291712 .

= = = = =   s t e p   &   d i r e c t i o n   t i m i n g   q u e s t i o n s   = = = = =
I have HBS860H drivers with 57HBS30 stepper motors (including encoder feedback to driver).  I was getting very 'rough' and non-repeatable motor rotation although the hybrid driver-to-motor feedback wasn't indicating a missed step, so I wished to investigate the step/dir signal provided by the Remora EC300 to the driver.  I hadn't fully understood the DMA conversation but I saw the significance of the Step Length/Step Space/Dir Hold/Dir Setup definition by Scott here 17 Nov 2023 05:35 #285690 , thank you. These values were intended for DM860H stepper drivers.  I adopted these values and now have a 'normal' feel and sounding stepper motor; a big step forward.
The issue that remains is that the '12800 pulses/rev divided by 5 mm/rev equals 2560 pulses/mm' does not produce the correct degrees of rotation.  I have to suspect still the 'Step Length/Step Space/Dir Hold/Dir Setup' values as these are 'borrowed' from another driver type.
This video decribes the drivers and provides the 'best' datasheets (similar Leadshine HBS86H)

Is there a conservative set of values that is likely to work well as a starting point, as just blindly increasing all 4 values may not be appropriate?
 

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2 years 8 months ago - 2 years 8 months ago #293927 by Cold Turkey
@ vpomerleau

Could you post the config you used for the RT1052? Was it the same one you use for the STM32?

Sounds a bit like what I'm looking for. Cheers.
Last edit: 2 years 8 months ago by Cold Turkey.

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2 years 8 months ago - 2 years 8 months ago #293938 by vpomerleau
Hi Cold Turkey
I use the standard DMA config modified to have all inputs and outputs, I dont use the same on the STM, the pinout are different  . Im not a programmer but I took a look at the NVMPG section of both firmware and there is differences, maybe new NVMPG dont have the STM chip anymore. Can you give me details about it Scott please, 
Last edit: 2 years 8 months ago by vpomerleau.

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2 years 8 months ago #293946 by cakeslob
tim, check the timing section of the manual, and start there, if its the same manual you have look here


vpo,
re: nvmpg
if you swap pendants, does the old pendant work with the rt1052 and vice versa? you arent the first one to report an issue with it. if you think it maybe a new pendant design, it would helpful to find out if its the pendant or fw

re: analog

does the value of the analog out change at all when you command it in linuxcnc? can you post your halfile?

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2 years 8 months ago #293968 by Cold Turkey
Sorry, missed where you wrote you had the all the inputs working. I had noticed that the config for the NVEM RT1052 had the mpg pins listed in its config but they aren't in the EC500 DMA config, thought that may have been the issue.

I don't have an NVMPG to test. I'd like to build my own panel.... Actually I'd like to see how an 8x8 matrix keyboard goes with it :)

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